Half to august butz



. UNITED CAMIELLE IULOIIER, OF MURPIIYSBOROUGII, ILLINOIS, ASSIGNOR OF ONE- IIALF TO AUGUST BUTZ, OF SAME PLACE.

PNEUMATIIC 'TlRlE PUMP.

SPECIFICATION forming part of Letters Patent No. 604,787, dated May 31, 1898. .llpplicatlen filed November 30, 1897. Serial No. 666,227. (No model.)

To whom it may concern:

Be it known that I, OAMIELLE PULOHER, a citizen of the United States, residing at Murphysborough, in the county of Jackson, State of Illinois, have invented certain new and useful Improvements in Pneumatic-Tire Pumps, of which the following is a specification, reference being had therein to the accompanying drawings. 7

1o This invention relates to pneumatic-tire pumps, and more particularly to pumps which are adapted to be automatically operated by the movement of the wheel and in which the pumping action will be suspended when the [5 desired pressure of air is secured within the tire.

The invention has for one of its objects to provide an improved form of pumping apparatus which in the movement of the wheel :0 will operate a suitable pump to force air within the tire and when the desired pressure of air is secured to automatically suspend said pumping operation.

A further object of the invention is to so 5 construct the several details of the parts of the invention as to render the same economical of construction and positive in action, so that the few parts used are not liable to become disarranged from their operative positions.

0 A further'object is to provide for the adj ustment of the several parts, so that the pumping capacity of the invention may be regulated to accommodate the same to conditions present in different classes of tires.

5 Other objects and advantages of the invention will hereinafter appear in the following description, and the novel features will be particularly pointed out in the appended claims.

2 In the drawings, Figure 1 is a side elevation, with parts in section, of the invention. Fig. 2 is an end view of the same. Fig. 3 is a detail elevation, partly in section, of the bearing-surface adapted to be secured to the hub of a wheel. Fig. 4 is an end view of the eccentric, sleeve, and the spring which operates thereupon. Fig. 5 is a side view of the yoke for connection with the rod extending from the pump. Fig. 6 is a perspective of a felt dust-protecting washer or band located upon the yoke. Fig. 7 is a detail illustration of the means for rigidly connecting the pump with the fellyor rim of the wheel; and Fig.

8 is a side elevation of a bicycle, showing the application of my pump to the front tire. Like letters of reference indicate like parts throughout the several iiguresof the drawings. I

The letter A indicates an air-pump of any suitable construction. Forinstance,asillns- 6o trated in this application, it is provided with a connecting-nipple A for connection with the air-tube extending through the rim A of a bicycle-wheel. The pump is provided with the usual removable cap A and may be connected with the rim or folly of the wheel by any suitable meansforillustration, a clamp B, provided with separated members 13, adapted at their inner ends to embrace the edges of a rim and at its outer end screwthreaded upon the exterior surface for the application of a clamping-nut 13 which when adjusted upon the separated portions of the clamp will draw the same firmly into contact with the pump-cylinder and hold the same against movement.

Within the pump-cylinder A, I locate a suit able piston C, which is carried upon a piston-- rod (3, extending from the pump, said piston having adjacent thereto a sliding flap-valve G which operates between the same and a nut projection (1 located upon the end of the red C. For the purpose of assisting the movement of the piston in one direction a spring (3 extends between one face of the same and the cap A The piston C is provided with suitable apertures therethrough, which in the movement of the same and of the valve 0 will trap the air before the piston to force the same into the tire.

A. suitably-weighted eccentric I) is located upon the hub of a Wheel in any suitable 1nan-- nerfor instance, by the use of a two-part bearing the surfaces E of which are connected together by screw-bolts E and held against 5 rotation upon the hub bymeans of set-screws 1 This bearing-surface is provided with flanges E at opposite ends, and upon the same, between the flanges, the sleeve 1), carrying the flan ged eccentric surfaces D, is 10- I00 cated. This sleeve is provided at one end with a series of ratcl1et-teeth'1),and suitably secured to the flange E of the bearing E, I locate a spring-finger D adapted to travel and bear upon the ratchet-teeth D in order to prevent the falling of the weighted eccencured together by a suitable bolt F The up-v per member of said yoke is provided with a connecting-lug F adapted to receive the threaded inner end C of the piston-rod, which can be adjusted therein by the application of a wrench to the squared portion (1 of the rod to rotate the same. The rod and lug are held in their relative positions by means of jamnuts 0', located at opposite ends of the lug. The lower member of the yoke is provided with a suitable oil-aperture F for the application of a lubricant, and other apertures of this character may be located in the several parts, so that all the rotating members can be lubricated from a single aperture. Surrounding the yoke F, I place any suitable form of d ust-proteetin g device'--for inst-an ce,a slotted felt band G, having the slot G thereof to receive the lug F and at its lower portion secured upon the yoke by means of the cap G which passes through the felt band and into the oil-aperture 11 to close the same. Depending from the eccentric portions D D are oppositely-located threaded arms II, upon the lower end of which weights II are suspended by means of an adjusting-nut 11 which in its movement upon the threaded rod 11 will raise and lower the weights to regulate the force of the same in the operation of the pump. It will be understood that these nuts are located within a slot formed in the weight members and that the lower ends of the rods ll pass through a slot of greater diameter than the rods, so that the weights may be adjusted thereupon.

The operation of thispump is as follows: The pump-cylinder is rigidly connected with the tire of the rotating wheel and thus carries the yoke around the eccentric in the movement of the wheel, the eccentric being held during the pumping action in a substantially rigid relation by reason of the weights. Now when the pressure of air within the tire and against the piston'of the pump becomes greater than the force exerted by the weights the yoke carried by the piston-rod will be forced against the eccentric and by its frietional contact therewith will rotate the eccentric until the pressure of the air within the tire becomes so reduced that the force exerted by the piston-rod and yoke is less than that of the weight, at which time the weight will again hold the eccentric against rotation until the desired pressure is secured. It will thus be observed that the principle involved is the loose mounting of the yoke upon the eccentric and the application of pressure to the yoke for the purpose of retating the eccentric when the desired airpressure is secured.

The spring 1 as heretofore described, is for the purpose of preventing the weight from falling more rapidly than the rotation of the wheel when the weight has passed over the upper portion of the hub, and thus secures an equal and regular motion at all times.

By means of the adj ustable'connection between the piston-rod and the yoke and the adjustment of the weight the throw of the pu mppiston may be regulated and the force exerted by the weight likewise controlled to adapt the pump to different conditions of service present in bicycles of various constructions.

It is obvious that the bearing E might be omitted and the eccentric-sleeve 'D mounted directly upon the hub of a wheel, the spring D being in such instance mounted upon' a movable member of the wheel. It may be also stated that a suitable packing can be provided wherever found necessary to prevent the entrance of dust into the parts of the de-- vice, and various methods of attaching the pump-cylinder to the tire may be employed.

I have described in detail the preferred features of construction of the invention; but it. 1

is obvious that they may be altered without departing from the spirit of the invention as defined by the appended claims.

llaving described my invention and set forth its merits, whatI claim as new, and desire to secure by Letters Patent, is

1. The combination with a wheel, of an airpump carried thereby, and driving means held against rotation during the pumping action and adapted to automatically rotate with the wheel when the pressure in said pump exceeds that of the holding means; substantially as specified.

2. The combination with a wheel, of an airpump rotated thereby, weighted driving means loosely mounted upon the hub of the wheel, and a connection from said pump loosely mounted in relation to said driving means; substantially as specified.

The combination with a wheel, of an airpump rotated thereby, an eccentric loosely mounted upon the hub of the wheel, a yoke loosely mounted upon said eccentric and corn tation during the pumping action; substantially as specified.

5. The combination with a wheel, of an airpump rotated thereby, an eccentric loosely mounted upon the hub of the Wheel, a yoke loosely mounted upon said eccentric and connected to the piston-rod of said pump, and an adjustable Weight suspended from said eccentric; substantially as specified.

6. The combination'with a wheel,of a pumpcylinder rotated thereby, a piston-rod extending from said cylinder, an eccentric rotatably mounted upon the hub of said wheel, a yoke adjustably secured to said piston-rod, and automatic means for holding said eccentric against rotation during the pumping action of the piston-rod; substantially as specified.

- 7. The combination with a wheel',of a pumpcylinder rotated thereby, a piston-rod extending from said cylinder, an eccentric rotatably mounted upon the hub of said wheel, a yoke adjustably secured to said piston-rod, means for holding said eccentric against rotation during the pumping action of the piston-rod, and a pawl-and-ratchet device for preventing the rotation of the eccentric at a speed greater than the rotation of the wheel-hub; substantially as specified.

8. The combination with a wheel,of a pu mpcylinder carried thereby, a piston-rod extending from said cylinder and provided with a squared portion and a threaded end portion, a weighted eccentric located upon the wheelhub, a yoke rotatably mounted upon said eccentric and adjust-ably connected to the threaded end of said piston-rod; substantially as specified.

9. Thecombination withawhe'ehof a pumpcylinder and piston-rod carried thereby, an eccentric formed in sections and secured together so as to rotate upon the wheel-hub and V a yoke rotatably mounted upon said eccennected to said piston-rod; substantially as specified.

11. The combination with a wheel, of a cylinder and piston-rod rotated thereby, a yoke carried by said rod, an eccentric 'rotatably mounted upon said hub, a threaded extension from said eccentric, a weight adjustable upon said extension, and a nut mounted to adjust said weight; substantially as specified.

12. The combination with a wheel, of a pump-cylinder and its piston-rod, a bearing secured upon the wheel-hub against rotation, an eccentric rotatably mounted upon said bearing, and a yoke rotatably mounted upon said eccentric and connected to said pistonrod; substantially as specified.

13. The combination with a wheel, of a pump-cylinder and its piston-rod, a bearing secured upon the wheel-hub against-rotation, an eccentric rotatably mounted upon said bearing, a yoke rotatably mounted upon said eccentric and connected to said piston-rod, ratchet-teeth carried by said eccentric, and a pawl located upon said bearing; substantially as specified.

14C. The combination with a Wheel, of a pump-cylinder and piston-rod, an'eccentric' rotatably mounted upon the Wheel-hub and provided with flanges at opposite sides thereof, a rotatable yoke located between said flanges and connected with said piston-rod, and a packing-band extending around said yoke and into contact with said flanges; substantially as specified.

15. The combination with a wheel, of a pump-cylinder and its piston-rod, means for reciprocating said rod, a contractible clamp exteriorly threaded and secured to the wheel- 1 rim, and a nut engaging said threads for pressing and holding said clamp into contact with the pump-cylinder, substantially as specified.

In testimony whereof I atlix my signature in presence of two witnesses,

OA'MIELLE PULOIIER.

Witnesses:

JOHN RUDE, HENRY FRIEDLINE. 

